In order to support moving blocks up from one page to a preceding page, we need update the pages
one at a time, and then force a flush to the database.  Otherwise Hibernate behaves as described in #22 and the Block is deleted.
Adding javadoc
Refactoring code which updates pages to Service layer from Resource layer
In order to make the ConferenceServiceTest work, the `Set<AnswerEntity>` had to be made @Transisent.  This is okay though, b/c in a current branch that was going to happen anyways
Adding unit test to move blocks up and down.
Merge branch 'master' into fix-block-move
Merge pull request #42 from CruGlobal/fix-block-move

Add manual PageEntity updates EntityManager flushes to support moving blocks